Dataset for the establishment of an age model of marine sediment core KH19-6 Leg.4 PC10/MC14 collected from the Agulhas Ridge in the South Atlantic Ocean
Kaoru Kubota,
Rosaaideihn Tanabe,
Minoru Ikehara,
Yukiko Kozaka,
Koji Seike,
Yosuke Miyairi,
Yusuke Yokoyama
Affiliations
Kaoru Kubota
Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan; Graduate School of Human Development and Environment, Kobe University 3-11 Tsurukabuto, Nada, Kobe, Hyogo 657-8501, Japan; Corresponding author.
Rosaaideihn Tanabe
Center for Advanced Marine Core Research, Kochi University, 200 Monobu-otsu, Nankoku Kochi 783-8502, Japan
Minoru Ikehara
Center for Advanced Marine Core Research, Kochi University, 200 Monobu-otsu, Nankoku Kochi 783-8502, Japan
Yukiko Kozaka
Center for Advanced Marine Core Research, Kochi University, 200 Monobu-otsu, Nankoku Kochi 783-8502, Japan
Koji Seike
National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 7, 1-1-1 Higashi, Tsukuba 305-8567, Japan
Yosuke Miyairi
Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwa, Chiba 277-8564, Japan
Yusuke Yokoyama
Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan; Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwa, Chiba 277-8564, Japan
A precise age model of marine sediment core is crucial for environmental studies of the past such as paleoceanography, paleoclimatology, and paleo-hazard studies. Here the geochemical dataset is described that is used to determine the age model of marine sediment cores collected from Agulhas Ridge in the South Atlantic Ocean using piston coring and multiple-coring systems during the 30th Anniversary expeditions of R/V Hakuho Maru in 2019–2020 (KH19-6 Leg.4 PC10/MC14, water depth of 4,604 m). The top 3.27 meter of 12.28-meter-long piston core (PC10) and a whole 0.29-m-long multiple core (MC14) were dated. The dataset includes radiocarbon ages of planktonic foraminifera shells and oxygen isotopes of both planktonic (Globigerinoides bulloides, Globorotalia inflata) and benthic (Gyroidina soldanii) foraminifera shells. The top 7.5 kyr record was lost, the ages of 3.27 m depth below sea floor was ∼140 kyr ago, and sedimentation rates were 0.9–5.5 kyr/cm.
